MESON Chess Problem Database

Problem Display
PID: 222391 (4Q3/6N1/2pp4/3kp3/K7/4P3/1N6/6B1 w - - 0 1)

Chocolous, Jiri

Svetozor, 1883

4Q3/6N1/2pp4/3kp3/K7/4P3/1N6/6B1

#2

6 + 4

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kc5
      • 2.e4#
    • 1...e4
      • 2.Qh5#
    • 1...c5
      • 2.Qa8#
  • Tries
    • 1.Ka5?
      • 1...Kc5
        • 2.e4#
      • 1...e4
        • 2.Qh5#
      • 1...c5
        • 2.Qa8#
      • 1...Ke4!
    • 1.Bf2?
      • 1...Kc5
        • 2.e4#
      • 1...e4
        • 2.Qh5#
      • 1...c5
        • 2.Qa8#
      • 1...Ke4!
    • 1.Qh5?
      • 1...Ke4
        • 2.Qh1#
      • 1...Kc5
        • 2.e4#
      • 1...c5!
    • 1.Qg6?
      • threat
        • 2.e4#
      • 1...Kc5
        • 2.e4#
      • 1...e4
        • 2.Qf5#
        • 2.Qh5#
        • 2.Qg5#
      • 1...c5!
    • 1.Qd7?
      • 1...Kc5
        • 2.e4#
      • 1...e4
        • 2.Qf5#
      • 1...c5
        • 2.Qb7#
      • 1...Ke4!
    • 1.Qf7+?
      • 1...Kc5
        • 2.e4#
      • 1...Ke4!
    • 1.Qe6+?
      • 1...Kc5
        • 2.e4#
      • 1...Ke4!
    • 1.Qe7?
      • 1...Kc5
        • 2.e4#
      • 1...e4
        • 2.Qg5#
      • 1...c5
        • 2.Qb7#
      • 1...Ke4!
    • 1.Qc8?
      • 1...Kc5
        • 2.e4#
      • 1...e4
        • 2.Qf5#
      • 1...c5
        • 2.Qb7#
        • 2.Qa8#
      • 1...Ke4!
    • 1.Qd8?
      • 1...Kc5
        • 2.Qa5#
        • 2.e4#
      • 1...e4
        • 2.Qg5#
      • 1...c5
        • 2.Qa8#
      • 1...Ke4!
    • 1.Qf8?
      • 1...Kc5
        • 2.e4#
      • 1...e4
        • 2.Qf5#
      • 1...c5
        • 2.Qa8#
      • 1...Ke4!
    • 1.Qg8+?
      • 1...Kc5
        • 2.e4#
      • 1...Ke4!
  • Keys
    • 1.Qh8!
      • 1...Ke4
        • 2.Qh1#
      • 1...Kc5
        • 2.e4#
      • 1...e4
        • 2.Qh5#
      • 1...c5
        • 2.Qa8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::B(A)+P(C)
    • P(b);OGATEB,SBLOCK::QAR(F)
    • P(c);OGATEB,SBLOCK::QAB(F)
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Vars
        • K(a);P-FLIGHT::B(A)+P(C)
        • P(b);OGATEB,SBLOCK::QAR(F)
        • P(c);OGATEB,SBLOCK::QAB(F)
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT
    • Try
      • B(A);
      • Vars
        • K(a);P-FLIGHT::B(A)+P(C)
        • P(b);OGATEB,SBLOCK::QAR(F)
        • P(c);OGATEB,SBLOCK::QAB(F)
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT
    • Try
      • Q(F);P_PINP(b)
      • Vars
        • K(a);N_SPINP(b),S_FLIGHT::QAB(F)
        • K(a);P-FLIGHT::B(A)+P(C)
      • Refutation
        • P(c);
    • Try
      • Q(F);
      • Threat
        • P(C)
      • Vars
        • K(a);P-FLIGHT::B(A)+P(C)
      • Refutation
        • P(c);
    • Try
      • Q(F);P_PINP(d)
      • Vars
        • K(a);N_SPINP(d),P-FLIGHT::B(A)+P(C)
        • P(b);OGATEB::QAR2(F)
        • P(c);OGATEB,SBLOCK::QAB(F)
      • Refutation
        • K(a);N_SPINP(d),S_FLIGHT
    • Try
      • Q(F);CHECK
      • Vars
        • K(a);P-FLIGHT::B(A)+P(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(F);CHECK
      • Vars
        • K(a);P-FLIGHT::B(A)+P(C)
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT
    • Try
      • Q(F);
      • Vars
        • K(a);P-FLIGHT,P_SPINP(d)::B(A)+P(C)
        • P(b);OGATEB,SBLOCK::QAR(F)
        • P(c);OGATEB,SBLOCK::QAB(F)
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT
    • Try
      • Q(F);
      • Vars
        • K(a);P-FLIGHT,P_SPINP(c)::B(A)+P(C)
        • P(b);OGATEB::QAR2(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(F);P_PINP(d)
      • Vars
        • P(b);OGATEB,SBLOCK::QAR(F)
        • P(c);OGATEB,SBLOCK::QAB(F)
      • Refutation
        • K(a);N_SPINP(d),S_FLIGHT
    • Try
      • Q(F);
      • Vars
        • K(a);P-FLIGHT,P_SPINP(d)::B(A)+P(C)
        • P(b);OGATEB::QAR2(F)
        • P(c);OGATEB,SBLOCK::QAB(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(F);CHECK
      • Vars
        • K(a);P-FLIGHT::B(A)+P(C)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(F);
    • Vars
      • K(a);S_FLIGHT::QAB(F)
      • K(a);P-FLIGHT::B(A)+P(C)
      • P(b);OGATEB,SBLOCK::QAR(F)
      • P(c);OGATEB,SBLOCK::QAB(F)
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Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).